\input{preamble-standalone.ltx} \begin{document} % Ex. No. 55 (Section 9.2.5 : Example of rotation) \begin{tikzpicture}[scale=0.5] \tkzDefPoint(0,0){A} \tkzDefPoint(5,0){B} \tkzDrawSegment(A,B) \tkzDefPointBy[rotation=center A angle 60](B) \tkzGetPoint{C} \tkzDefPointBy[symmetry=center C](A) \tkzGetPoint{D} \tkzDrawSegment(A,tkzPointResult) \tkzDrawLine(B,D) \tkzDrawArc[orange,delta=10](A,B)(C) \tkzDrawArc[orange,delta=10](B,C)(A) \tkzDrawArc[orange,delta=10](C,D)(D) \tkzMarkRightAngle(D,B,A) \end{tikzpicture} \end{document}